async function submitTeacher(e) {
  e.preventDefault();
  const email = document.getElementById('t-email').value.trim();
  const password = document.getElementById('t-password').value;

  // 1. Register with Supabase Auth
  const { data: authData, error: authError } = await supabase.auth.signUp({
    email,
    password
  });

  if (authError) {
    ApexApp.showToast(authError.message, true);
    return;
  }

  const grades = Array.from(document.querySelectorAll('input[name="t-grades"]:checked')).map(cb => cb.value);
  const boards = Array.from(document.querySelectorAll('input[name="t-boards"]:checked')).map(cb => cb.value);

  // 2. Insert into profiles table
  const profileRecord = {
    id: authData.user.id,
    role: 'teacher',
    name: document.getElementById('t-name').value,
    whatsapp: document.getElementById('t-whatsapp').value,
    tuition_mode: document.getElementById('t-mode').value,
    address: document.getElementById('t-address').value || null,
    qualification: document.getElementById('t-qual').value,
    experience: Number(document.getElementById('t-exp').value),
    category: document.getElementById('t-category').value,
    grades: grades,
    boards: boards,
    non_academic_skill: document.getElementById('t-nonacad-item')?.value || null,
    competitive_exam: document.getElementById('t-comp-item')?.value || null,
    other_details: document.getElementById('t-other-text')?.value || null,
    fee_amount: Number(document.getElementById('t-fee').value),
    fee_currency: document.getElementById('t-curr').value,
    fee_period: document.getElementById('t-period').value,
    gmt_zone: document.getElementById('t-gmt').value,
    available_timings: document.getElementById('t-timings').value,
    location: document.getElementById('t-location').value,
    is_verified: true
  };

  const { error: dbError } = await supabase.from('profiles').insert([profileRecord]);

  if (dbError) {
    ApexApp.showToast(dbError.message, true);
    return;
  }

  ApexApp.setUser(profileRecord);
  window.location.href = 'index.html';
}
async function submitStudent(e) {
  e.preventDefault();
  const email = document.getElementById('s-email').value.trim();
  const password = document.getElementById('s-password').value;

  const { data: authData, error: authError } = await supabase.auth.signUp({
    email,
    password
  });

  if (authError) {
    ApexApp.showToast(authError.message, true);
    return;
  }

  const selectedGrade = document.querySelector('input[name="s-grade"]:checked')?.value;

  const profileRecord = {
    id: authData.user.id,
    role: 'student',
    name: document.getElementById('s-name').value,
    parent_name: document.getElementById('s-parent').value,
    whatsapp: document.getElementById('s-whatsapp').value,
    tuition_mode: document.getElementById('s-mode').value,
    address: document.getElementById('s-address').value || null,
    category: document.getElementById('s-category').value,
    grades: selectedGrade ? [selectedGrade] : [],
    boards: [document.getElementById('s-board')?.value || 'CBSE'],
    non_academic_skill: document.getElementById('s-nonacad-item')?.value || null,
    competitive_exam: document.getElementById('s-comp-item')?.value || null,
    location: document.getElementById('s-location').value,
    is_verified: false
  };

  const { error: dbError } = await supabase.from('profiles').insert([profileRecord]);

  if (dbError) {
    ApexApp.showToast(dbError.message, true);
    return;
  }

  ApexApp.setUser(profileRecord);
  window.location.href = 'index.html';
}